A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5920-00-407-7652
NSN 6110-00-659-3348
NSN 5920-01-346-1208
NSN 5998-01-143-4028
NSN 6130-01-070-8090
NSN 5855-01-343-7943
NSN 7035-01-545-5852
NSN 4140-01-632-3907
NSN 5835-01-240-5022
NSN 5915-01-414-2782
NSN 6150-01-424-1530
NSN 5925-00-877-8066